Translations:AY Honors/Heraldry - Advanced/Answer Key/94/en
From Pathfinder Wiki
The eldest son’s arms bear his cadency mark until his father’s death whereupon it is discarded and he reverts to his father’s ‘plain arms’ since he himself has become head of the family. Cadency marks for all other sons are permanent and descend as part of the arms to their own sons who duly add their own differencing for cadency.
